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火星的表面确实有一层薄薄的含少量氮的大气

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发表于 2013-10-25 15:01:59

  I% X9 W) X! r" |$ m4 U  但是,从目前所掌握的资料看,火星上在现阶段是不会有生命的,即使火星曾经存在过水,但现在早已干枯,火星的表面确实有一层薄薄的含少量氮的大气,可是那里气压太低,使火星两极的水分很快就蒸发完了,不可能有长期的水体存在。70年代,美国发射的探侧器所做的三项实验,其中两项得出了否定的结果,只有一项实验得到了模棱两可的结论,表明火星上是不存在生命的,因为按照人类的一贯思维,火星上也不具备生命的条件,从而使火星上不存在生命几乎成为定论。http://gjnk.thmz.com/pfk/qtpfb/2111.html
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